2005 Yamaha Outboard 25D Boat Motor Owners Manual

25D OWNER’S MANUAL U.S.A.Edition LIT-18626-05-83 6L2-28199-1L EMU25060 ZMU01690 Read this owner’s manual carefully before operating your outboard motor. Important manual information EMU25100 To the owner Thank you for choosing a Yamaha outboard motor. This Owner’s Manual contains information needed for proper operation, maintenance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha.

If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. In this Owner’s Manual particularly important information is distinguished in the following ways. The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! EWM00780 al, please consult your Yamaha dealer. NOTE: The 25MH and the standard accessories are used as a base for the explanations and illustrations in this manual. Therefore some items may not apply to every model. EMU25110 WARNING Failure to follow WARNING instructions could result in severe injury or death to the machine operator, a bystander, or a person inspecting or repairing the outboard motor. ECM00700 25D OWNER’S MANUAL 2004 by Yamaha Motor Corporation, USA 1st edition, March 2004 Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, USA is expressly prohibited. Printed in Japan P/N LIT-18626-05-83 CAUTION: A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor. NOTE: A NOTE provides key information to make procedures easier or clearer. Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your machine and this manual. If there is any question concerning this manu- Table of contents General information 1 Identification numbers record . 1 Outboard motor serial number 1 Operation . 17 Installation 17 Mounting the outboard motor 17 Clamping the outboard motor 18 Emission control information 1 North American models . 1 Breaking in engine . 19 Gasoline and engine oil mixing chart (25:1) 19 Procedure for pre-mixed models . 19 Safety information 2 Important labels 3 Warning labels 3 Basic boating rules (Rules of the road) . 4 Steering and sailing rules and sound signals . 4 Rules when encountering vessels 4 Other special situations . 5 Preoperation checks 20 Fuel . 20 Oil 20 Controls . 20 Engine . 20 Filling fuel and engine oil . 20 Filling fuel for portable tank . 20 Ring Free Fuel Additive . 21 Gasoline and oil mixing (100:1) . 21 Fueling instructions 7 Gasoline 8 Engine oil 8 Propeller selection 8 Start-in-gear protection 9 Basic components 10 Main components . 10 Fuel tank . 10 Fuel joint . 11 Fuel gauge 11 Fuel tank cap 11 Air vent screw . 11 Tiller handle 11 Gear shift lever 11 Throttle grip . 11 Throttle indicator . 12 Throttle friction adjuster . 12 Engine stop lanyard switch . 12 Engine stop button 13 Choke knob for pull type . 13 Manual starter handle . 13 Steering friction adjuster . 13 Trim tab with anode 14 Trim rod (tilt pin) 14 Shallow water lever . 14 Tilt lock mechanism . 15 Tilt support bar 15 Top cowling lock lever(s) (turn type) . 15 Operating engine . 22 Feeding fuel (portable tank) 22 Starting engine 23 Warming up engine 25 Choke start models . 25 Shifting . 25 Forward (tiller handle and remote control models) . 25 Reverse (manual tilt and hydro tilt models) . 26 Stopping engine . 26 Procedure 26 Trimming outboard motor . 27 Adjusting trim angle for manual tilt models 28 Adjusting boat trim 28 Tilting up and down 29 Procedure for tilting up 30 Procedure for tilting down (manual tilt models) . 30 Cruising in shallow water . 31 Cruising in shallow water (manual tilt models) . 31 Warning system . 15 Overheat warning 15 Cruising in other conditions 32 Maintenance 33 Specifications . 33 Transporting and storing outboard motor 33 Table of contents Clamp screw mounting models . 34 Storing outboard motor . 34 Procedure . 35 Lubrication (except oil injection models) . 36 Cleaning and anticorrosion measures 36 Cleaning the outboard motor 36 Checking painted surface of motor . 36 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE U.S.A. OR CANADA 60 Periodic maintenance . 37 Replacement parts 37 Maintenance chart 38 Greasing . 39 Cleaning and adjusting spark plug 39 Checking fuel system 40 Inspecting fuel filter . 41 Cleaning fuel filter . 41 Inspecting idling speed . 42 Checking wiring and connectors . 42 Exhaust leakage . 42 Water leakage . 42 Checking propeller 43 Removing the propeller . 44 Installing the propeller . 44 Changing gear oil 44 Cleaning fuel tank . 45 Inspecting and replacing anode(s) 46 Checking top cowling 46 Coating the boat bottom 46 Trouble Recovery 48 Troubleshooting . 48 Temporary action in emergency. 51 Impact damage . 51 Starter will not operate 51 Emergency starting engine . 52 Treatment of submerged motor 53 Procedure . 53 Consumer information 55 Important warranty information for U.S.A. and Canada 55 YAMAHA MOTOR CORPORATION, U.S.A. OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY . 57 General information EMU25170 Identification numbers record EMU25182 engine for details. EMU30390 Outboard motor serial number The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket or the upper part of the swivel bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is stolen. Approval label of emission control certificate This label is attached to the bottom cowling. Existing Technology; N/A 1 ZMU04828 1. Approval label location EMISSION CONTROL INFORMATION ENGINE FAMILY : THIS ENGINE CONFORMS TO 2001 U.S. EPA REGULATIONS FOR MARINE SI ENGINES. REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS. g/kw-hr FELs : IDLE SPEED : rpm IN NEUTRAL SPARK PLUG : SPARK PLUG GAP (mm) : DISPLACEMENT : cm 3 FUEL : GASOLINE EX ADVERTISED POWER : VALVE LASH (mm) : IN kw 1. Outboard motor serial number location ZMU04304 EMU25261 Manufactured date label This label is attached to the clamp bracket or the swivel bracket. EMU25220 Emission control information EMU25230 North American models This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for marine SI engines.